Stave



F. 0. EVANS.

STAVE. Y

APPLICATION FILED ocT. lo, m19.

1,356,347'.v Patented 00u 19,1920.

c dum-N 4 w LL -4 gmmmwgi/Mm mmmmw UNITED STATES jP'ATENT OFFICE# FRANK o. EVANS, or CHICAGO; ILLINOIS.

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Specification of Letters Patent. y Patented Oct, 19, 1920,

Application led October 10, 1919. Serial No. 329,777.

necting adjoining staves, theprincipal ob-l ject residing in the provision of means which will permit of relative angular `disposal of the connected staves whereby a wall constructed therefrom may be flexed to assume various shapes. I

The invention consists in a stave or block preferably constructed from cement and having one edge transversely convexed and the opposite edge transversely concaved to receive the convex edge of an adjacent stave andthereby permit of pivotal movement between the staves, and a tie link or bar extending through each stave from its con cave to its convex edge and terminating in means foi1 pivotal coupling with the tie link of an adjacent stave, such coupling of the links being effective by and during the positioning of the staves.

In the drawings- Figure l is a side elevation of a wall constructed in accordance with the present invention, a portion being removed to show the connection between two tie links;

Fig. 2 is a horizontal section on line 2-2 of Fig. l: and y Fig. 3 is an enlarged view disclosing the structure in slightly modiied form.

kThe stave or block is preferably cast from cement and comprises a rectangular body l having one side edge 2 formed with a transverse convexity and its opposite, paralleling edge 3 with a transverse concavity which defines a lengthwise groove to conformably receive the rounded edge 2 of the next adjacent block l.' This nesting relation between the edges of the stavespermits of relative angular adjustment of the staves without separating them at their joints.:

A. pair of tie links or bars t pass through each stave at spaced points and protrude slightly through the concave and convex edges. Each link is a flat, strap-like-bar which is disposed with its sides parallel to the side facesof the stave, and theedges of the latter are recessed about the protruding ends of the links, as indicated at 5. Within thesey recesses 5 theends of the links are twisted ninety degrees about their longitudinal axes so that the terminals of the links are horizontally disposed. One terminal is formed with an eye 6 and the opposite terminal with a downturned hook 7 engageable in the eye of a link in the adjacent stave.

In the constructionk of a wall, the stave eye 6 register with the hooks 7 of two superposed staves and then shifted to thread the eyes over the hooks` Each stave is thus positioned and when the wall is completed the component staves will be positivelyr locked against unauthorized removal. t will be noted that the hooks are substantially in alinement with the joint between abutting edges 2 and 3 so that the pivotal nesting movement between said edges will not be interfered with. Cement or mortar may be buttered in the recesses before setting up the staves which acts to lock the coupled links in their adjusted relation.

Fig. 3 depictsthe link terminals extending i straight into the recesses or pockets 5 withlinks constitute a continuous tie rod extend- The links of i ing through the entire wall. one stave form a ybinder between the relatively staggered'pair of staves on eachside and tend to hold them firmly together yin end to end engagement as is clearly illustrated in Fig. l. Y What is claimed isl. A stave having a body, and a tie link" extending through the body and adjacent to the respective body ends, said link being formed of a strip of flat` sheet metal set on edge and having its wide rfaces parallel to the Vfront andfrear faces of the body, one end of the'strip being twisted and formed with a hole and the other end of the stripk being inserted is first positioned to have its being twisted and contracted Jandformed i i into a hook to be received in thehole of an adjacent link'.

2. A stave having` a body7 and a tie link extending` through the body and adjacent to the respective body ends7 said link being formed of a strip of iat sheet metal one end of the strip being` formed With a hole disposed between the normal sides of the strip and the other end of the strip being contracted and formed with a hook to be 10 received in the hole of anadjacent strip.

In testimony whereof I aiiix my signature.

FRANK O. EVANS. 

